Troy (Propeller), 27 Nov 1898

In answer to inquiry made by the Review, Gen. Mngr. Geo. L. Douglas of the Western Transit Co., Buffalo, who is very much pleased with the steamer TROY, recently completed by the Detroit Dry Dock Co., says his company has under consideration the question of building another steamer, but it has not yet been decided. The Marine Review
      October 27, 1898
     
     
     
Particulars of the Steamer TROY. - Trial of a Lake Freighter That Burns less Than 1 ½ Pounds of Coal per Indicated Horse Power per Hour. - There is presented herewith a picture of the steamer Troy, built recently by the Detroit Dry Dock Co., Detroit, Mich.. for the Western Transit Co., which is the lake line of the New York Central Railroad. The Troy is certainly a representative package freight steamer of the lakes, as she can stow away enough flour to give her a full cargo at the present draught to Lake Superior, and she has hoisting apparatus capable of discharging her entire cargo in ten hours. She holds the record in the flour trade - 48,500 barrels. It is claimed for her that she can move 5,050 tons of freight at 13 miles speed with less power than any other ship on the lakes. Success with this vessel as regards fuel economy is attributed largely by her builders to the use of Howden hot draft. In the following particulars of a trial made October 19 between Detour and Point au Barques by Messrs. Wilson and Mattson, it will be noted that the coal burned per indicated horse power per hour is only 1.480 pounds.
Particulars of vessel: Length over all, 402 ½ feet; beam, 45 feet 6 inches; depth, molded, 28 feet; load, 4,852 net tons; mean draught, 17 feet 3 inches: quadruple expansion engine, with cylinders of 19, 27 1/2, 40 and .;8 inches diameter by 43 inch stroke, air pump of 33 inches diameter and 14 inch stroke, with 18 inches diameter of trunk; three Scotch boilers. 11 feet diameter by 11 feet 6 inches over all. allowed 210 pounds pressure: 6 furnaces of 39 inches inside diameter; grate bars of 5 feet 3 inches - 102 3/8 square feet of grate surface total heating surface, 4,617 square feet: heating surface to grate surface, 45.104: fan wheel for draft, 66 inches diameter. 34 x 34 inches discharge; fan engine, 7 x 7 inches; heater, 20 inches outside diameter, and 9 feet 6 inches over all. with 49 tubes of 1 ½ inches by 7 feet 8 inches - 147 square feet heating surface, propeller. sectional and four bladed, of 14 feet diameter and 16 feet pitch - 61.2 square feet expanded area.
Report of trial: Steam pressure, 204 pounds; steam pressure first receiver, 98 pounds second receiver, 40.8 pounds: third receiver. 9.5 pounds vacuum, 22 inches revolutions average 80.66 I. H. P., high pressure cylinder, 388; first intermediate 411.5; second intermediate. 440.5: low pressure 452; total, 1,692; refit M.E.P. to I.P. cyl., 37.44; horse power to grate surface, 16.58, heating surface to horse power. 2,728 duration of test, 6 hours 3 min.: total coal burned, 15,250 pounds, coal burned per hour, 2,520 pounds coal burned per hour per 1. H. P., 1.489 pounds; coal burned per hour per square foot of grate, 24.7 pounds; air pressure at fan, 2 inches; temperature of hot air at furnace, 190°, temperature of hot well, 135 ; temperature of feed water after leaving heater, 170°, speed of vessel, 13.25 miles, speed of propeller. 14.66 miles; slip of propeller, 9 5/8 per cent.; weather, stiff head wind.
      The Marine Review
      December 1, 1898